odoo/RELEASE_NOTES.md at a0308e0b6abc7f38e3207dbfb96f476bc265de6b

odoo

Version 2.1.0 (January 7th 2012)

Wrapped in self executing function to be more easily used with loaders like require.js or curl.js (issue #15)
Allow event to be cancelled by returning false from onleavestate handler (issue #13) - WARNING: this breaks backward compatibility for async transitions (you now need to return StateMachine.ASYNC instead of false)
Added explicit return values for event methods (issue #12)
Added support for wildcard events that can be fired 'from' any state (issue #11)
Added support for no-op events that transition 'to' the same state (issue #5)
extended custom error callback to handle any exceptions caused by caller provided callbacks
added custom error callback to override exception when an illegal state transition is attempted (thanks to cboone)
fixed typos (thanks to cboone)
fixed issue #4 - ensure before/after event hooks are called even if the event doesn't result in a state change

adding support for asynchronous state transitions (see README) - with lots of qunit tests (see test/async.js).
consistent arguments for ALL callbacks, first 3 args are ALWAYS event name, from state and to state, followed by whatever arguments the user passed to the original event method.
added a generic onchangestate(event,from,to) callback to detect all state changes with a single function.
allow callbacks to be declared at creation time (instead of having to attach them afterwards)
renamed 'hooks' => 'callbacks'
read more...

allows the same event to transition to different states, depending on the current state (see 'Multiple...' section in README.md)
read more...